Improvement in looms



UNITED STATES 'l PATENT Trice.

RENSSELAER REYNOLDS, OF STOCKPORT, hTEV YORK'.

IMPROVEMENT IN Loot/is.

Specifica-tion forming part of Letters Patent No. 36,529, dated September 23,1562.

,. accompanying drawings, forming part of this spech'ication, in whieh- Figure l is a vertical section of a let-off motion and all the parte of the loom necessary to illustrate the improvement. Fig. 2 is a back view ofthe same. Fig. 3 is a top view of the same. Fig. 4 is a diagram illustrative of the diliculty which luy-invention is intended to overcome.

Similar letters of reference indicate corresponding parts in the s everal iigures.

This invenlion is applicable to the letoff motion which constitutes the subject-matter ol' my Letters Patent of May 21, 1861, and to all let-off motions in which an oscillating whip-roll lor its equivalent is employed. In the ordinary applications of the oscillating whipnll the yarn, passing directly from the beam over the said'roll, passes over the said roii' .fit-differentl angles, according to the quantity of yarn onthe beam, as illustrated in Fig.4, in which figure the beam B is shown .with a large quantity of yarn in .red color. and a smaller quantity in blue color, and it is shown that the angle, in passing over he whip-roll C, is much greater when the beam is full, and diminishes as the quantity of yarn on the beam diminishes. This causes the forward movement of the'whiproll, byiwhich the letting off of the yarn is effected, to be pro duced with a-less'tension of the warp as 'the fqil'antity of yarn diminishes, and produces a tendency to let od' faster.

- The object of my invention is to make the angle which the yarn forms, in passing over the oscillating whip-roll or its equivalent, always the same, irrespective of the quantity of yarn on the beam; -and to this end it consists in ithe employment of a roll arranged in xed bearings, and in a position belo'wV and in rear of. the whip-roll or its equivalent, where 'the yrn will pass over it on its'way to the latter' roIl'or equivalent.

. A, Figs. 1, 2, and 3, is the framing of the loom.

a roll. may be used.

B is the yarn beam.

C is an oscillating bar, which I prefer tov substitute for the oscillating whip-roll, though This bar has a rounded face to prevent abrasion of the yarn. It is at tached securely to two arms, c c', which are arranged to oscillate upon fixed studs a a', secured to the sides ofthe framing. The arm c has rigidlysecured to it by a'bolt, b, an arm, d, which is extended 4downward below its respective studI a', and a spring, D, secured to the back of the framing,is applied to act upon l the same arm, d, in such manner as to exerta tendency to throw back the whip-bar C 1n opposition to the action of the tension of the yarn, which tends to draw forward the said l bar. This mode of applying a spring is only one of many that maybe adopted to. hold or draw back the whip-bar in opposition to the tension of the bar.

I have not thought it necessary to represent the let-off mechanism, as that may be the same as described, in my hereinjefore-inentioued Letteis Patent, or'ot` any other vsuitable kind.

E is the roll which constitutes my invention, arranged in a position below and some distance in rear ot' the whip-bar O,where it is supported by itsjonrnals being fitted to'xed bearingsin brackets c c, secured tothe sides of the looin,and where the yarn on its way from the beam to the whip bar C will pass behind aud in contact with it, as shown in Fig. l, in which the yarn is represented in red color coming from a full beam, andl in blue coloi` from a nearly-empty beam, and by the aid of which it may be understood that the angle which is formed by the yarn inpassing over 'the whipybar or whip-roll is the same, irrespective ofthe'quantity upon the beam. This being the case, a given tension of the yarn will always have the same effect upon the whip-bar or'whip-roll, and the letting orf will be uniform, whatever theqnanrity of yarn upon the beam.

What I claim as my invention, and desire to secure by Letters Patent, is

The roll E,'applied in fixed bearings entirely independent of thewhip-bar or whiproll, and in relation to the said bar or roll,

substaritiallyas herein described, audoperatv ing as setforth.

To enable others skilled in the art to make and use my invention, I- will Aproceed to describe it with reference tothe drawings.

RENss. REYNOLDS. 

